Commit-ID: 1dbdc6f177c627ae462752c80a5c7f3b06a7f92a
Gitweb: http://git.kernel.org/tip/1dbdc6f177c627ae462752c80a5c7f3b06a7f92a
Author: David Daney <david.daney@xxxxxxxxxx>
AuthorDate: Thu, 19 Apr 2012 14:59:57 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Thu, 19 Apr 2012 15:06:56 -0700
kbuild/extable: Hook up sortextable into the build system.
Define a config variable BUILDTIME_EXTABLE_SORT to control build time
sorting of the kernel's exception table.
Patch Makefile to do the sorting when BUILDTIME_EXTABLE_SORT is
selected.
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1334872799-14589-4-git-send-email-ddaney.cavm@xxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
Makefile | 10 ++++++++++
init/Kconfig | 3 +++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
index f6578f4..622c918 100644
--- a/Makefile
+++ b/Makefile
@@ -784,6 +784,10 @@ quiet_cmd_vmlinux_version = GEN .version
quiet_cmd_sysmap = SYSMAP
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
+# Sort exception table at build time
+quiet_cmd_sortextable = SORTEX
+ cmd_sortextable = $(objtree)/scripts/sortextable
+
# Link of vmlinux
# If CONFIG_KALLSYMS is set .version is already updated
# Generate System.map and verify that the content is consistent
@@ -796,6 +800,12 @@ define rule_vmlinux__
$(call cmd,vmlinux__)
$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
+ $(if $(CONFIG_BUILDTIME_EXTABLE_SORT), \
+ $(Q)$(if $($(quiet)cmd_sortextable), \
+ echo ' $($(quiet)cmd_sortextable) vmlinux' &&) \
+ $(cmd_sortextable) vmlinux)
+
+
$(Q)$(if $($(quiet)cmd_sysmap), \
echo ' $($(quiet)cmd_sysmap) System.map' &&) \
$(cmd_sysmap) $@ System.map; \
diff --git a/init/Kconfig b/init/Kconfig
index 6cfd71d..92a1296 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -27,6 +27,9 @@ config IRQ_WORK
bool
depends on HAVE_IRQ_WORK
+config BUILDTIME_EXTABLE_SORT
+ bool
+
menu "General setup"
config EXPERIMENTAL
--
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